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-rwxr-xr-xtools/perf/trace/beauty/mmap_flags.sh2
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/perf/trace/beauty/mmap_flags.sh b/tools/perf/trace/beauty/mmap_flags.sh
index 3022597c8c17..d035b29fc5ec 100755
--- a/tools/perf/trace/beauty/mmap_flags.sh
+++ b/tools/perf/trace/beauty/mmap_flags.sh
@@ -19,7 +19,7 @@ arch_mman=${arch_header_dir}/mman.h
printf "static const char *mmap_flags[] = {\n"
regex='^[[:space:]]*#[[:space:]]*define[[:space:]]+MAP_([[:alnum:]_]+)[[:space:]]+(0x[[:xdigit:]]+)[[:space:]]*.*'
-grep -E -q $regex ${arch_mman} && \
+([ -f ${arch_mman} ] && grep -E -q $regex ${arch_mman}) && \
(grep -E $regex ${arch_mman} | \
sed -r "s/$regex/\2 \1 \1 \1 \2/g" | \
xargs printf "\t[ilog2(%s) + 1] = \"%s\",\n#ifndef MAP_%s\n#define MAP_%s %s\n#endif\n")